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# In lab you submerge 100 g of 40°C iron nails in 100 g of

ISBN: 9780321909107 29

## Solution for problem 5P Chapter 16

Conceptual Physics | 12th Edition

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Problem 5P

In lab you submerge 100 g of 40°C iron nails in 100 g of 20°C water (the specific heat of iron is 0.12 cal/g°C.) (a) Equate the heat gained by the water to the heat lost by the nails and show that the final temperature of the water becomes 22.1°C. (b) Your lab partner is surprised by the result and says that since the masses of iron and water are equal, the final water temperature should lie closer to 30°C, half-way between. What is your explanation?

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Solution 5P 0 (a) Let the final temperature be x C Specific heat of water is = 1 cal/g C0 Initial temperature of water = 20 C 0 Mass of water = 100 g Therefore, heat gained by water= mass × specific heat × change in temperature 0 0 = 100 g × 1 cal/g C × (x 20) C = 100(x 20) cal …..(1) Mass of the nails = 100 g Specific heat of iron = 0.12 cal/g C0 Initial temperature of the nails = 40 C0 Heat lost by the nails = mass × specific heat × change in temperature = 100 g × 0.12 cal/g C × (40 x) C 0 = 100(4.8 0.12x) cal…..(2) Now, equating equations (1) and (2), 100(x 20) =...

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##### ISBN: 9780321909107

Conceptual Physics was written by and is associated to the ISBN: 9780321909107. This full solution covers the following key subjects: Water, heat, iron, Nails, lab. This expansive textbook survival guide covers 45 chapters, and 4650 solutions. The answer to “In lab you submerge 100 g of 40°C iron nails in 100 g of 20°C water (the specific heat of iron is 0.12 cal/g°C.) (a) Equate the heat gained by the water to the heat lost by the nails and show that the final temperature of the water becomes 22.1°C. (b) Your lab partner is surprised by the result and says that since the masses of iron and water are equal, the final water temperature should lie closer to 30°C, half-way between. What is your explanation?” is broken down into a number of easy to follow steps, and 86 words. The full step-by-step solution to problem: 5P from chapter: 16 was answered by , our top Physics solution expert on 04/03/17, 08:01AM. This textbook survival guide was created for the textbook: Conceptual Physics, edition: 12. Since the solution to 5P from 16 chapter was answered, more than 556 students have viewed the full step-by-step answer.

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